Researchperovskitebetavoltaiccarbon 14energy harvesting
Perovskite Betavoltaics Achieve 10.79 Percent Efficiency
7.2
A DGIST-led team led by Professor Su Il In on Jan 13, 2026 reports a perovskite-based betavoltaic cell using carbon-14 that achieves 10.79% energy conversion efficiency, about six times prior best. The researchers used methylammonium chloride additive and isopropanol antisolvent to optimize microstructure, observed an electron avalanche (~400,000 electrons per beta), and demonstrated stable output over more than 15 hours.
Key Points
- 1Demonstrate a 10.79% energy conversion efficiency in carbon-14 perovskite betavoltaic cells, record high.
- 2Enable avalanche multiplication (~400,000 electrons per beta) via optimized perovskite microstructure, boosting output.
- 3Suggest practical autonomous power for implants, space instruments, IoT and AI devices needing maintenance-free operation.
Scoring Rationale
High experimental novelty and peer-reviewed support, but scope remains focused on niche betavoltaic materials and early-stage viability.
Sources
Public references used for this report.
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